Abstract
The regularly occurring cochlear vessels in the external wall and spiral lamina were studied in the guinea pig and chinchilla following exposure to various types and durations of noise. A soft-surface specimen technique with or without injection of a contrast medium into the vascular system was used, and the occurrence of specified vascular parameters was assessed using phase-contrast microscopy. Noise does not seem to result in any extraordinary vascular pathology, but a slight, overall decreased blood supply to the cochlea and localized changes depending on cochlear turn are suggested.
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